What is the definition or description of: scuba diving?

See below: Scuba stands for self contained underwater breathing apparatus when one used scuba equipment and dives one will take a tank with them that eliminates the need to keep returning to the surface this will allow one to stay submerged for up to an hr and perform underwater exploration or work for prolonged periods.

SCUBA: Self contained underwater breathing apparatus. Scuba is an acronym that stands for underwater divers who strap tanks of oxygen or oxygen mix air to their back and are able to stay underwater without extra tubes, pipes or equipment. It is amazing to do but does have some dangers so you have to go thru certification to get good.